Motorhome front panel unit exterior surface



FIG. 1 is a front perspective view of a motorhome front panel unit exterior surface illustrating my new design;

FIG. 2 is a front end elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left side elevation view thereof; and,

FIG. 5 is a right side elevation view thereof. 

The ornamental design for a motorhome front panel unit exterior surface, as shown and described. 